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Diamondback Firearms DB-15 AR-15 Style 5.56 NATO and .223 Remington Green Pistol

The Diamondback Firearms DB-15 is an AR-15 style pistol chambered for 5.56 NATO and .223 Remington. Its direct-impingement operating system pairs with a 10-inch 4150 chrome-moly barrel, pistol-length gas system, and A2 flash hider. The forged 7075-T6 aluminum receiver features an A3 flattop for mounting an optic, while the 9-inch M-LOK rail provides flexible accessory attachment. A manual safety, standard trigger, black A2-style polymer grip, and one metal AR-style magazine complete the factory configuration.

Key features

  • 10-inch 4150 chrome-moly barrel for a compact AR-style platform
  • Chambered for both 5.56 NATO and .223 Remington ammunition
  • Direct-impingement operating system with pistol-length gas system
  • A3 flattop receiver supports aftermarket optic installation
  • 9-inch M-LOK rail provides flexible accessory mounting
  • Threaded muzzle with A2 flash hider for standard muzzle-device compatibility via the existing thread pattern arrangement on the barrel muzzle

The Diamondback DB-15 combines familiar AR controls with a compact pistol configuration and flexible rail space for customization.

Diamondback Firearms DB-15 AR-15 Style 5.56 NATO and .223: quick facts

What caliber is the Diamondback Firearms DB-15 AR-15 Style 5.56 NATO and .223?
It is chambered in 5.56 NATO, .223 Remington.
How many rounds does it hold?
30+1 rounds; magazines included: 1.
How big and heavy is it?
Barrel length 10 inches.
What kind of action does it use?
Semi-Automatic.
Is it optic ready or threaded?
Optic ready: Yes; threaded barrel: Yes.
What sights and finish does it have?
finish: Green.
Is it new or used?
New, in the original packaging.
Can I buy it in Idaho?
Yes. It ships to a licensed FFL dealer in Idaho; you pick it up there after the background check. Idaho buyers pick this handgun up at a licensed dealer after a NICS check, with no permit and no waiting period; dealers sell handguns from age 21 under federal law.
Is it in stock?
Yes, at $832.01. Orders leave within 1-2 business days; shipping is free over $999.

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